Event: Division B

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Opponent Rating Result
Robert Tinton 124 0 - 1
Brian Davies 83 0 - 1
Brian Davies 83 1 - 0
Robert Grounds 130 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

105 = (420 + 400 * (2 - 2)) / 4)

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Opponent Rating Result
Derek Marsden 107 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

507 = (107 + 400 * (1 - 0)) / 1)